The On-Stage MSA9720TB is a telescopic boom arm for use with mic stands. It adjusts from 19-30" and has an all-steel construction. It has standard 5/8"-27 threads, plus a neoprene rubber grip. A locking washer ensures that the boom stays in place. It also has a 320° angle adjustment for excellent versatility.
On-Stage MSA9720TB All-Steel Telescoping Boom Arm (Black)